they fit real well with the sono tube from lowes/depot I never used or mounted them.
http://i8.photobucket.com/albums/a42/splfrek/subwoofer/DSC04620.jpg
http://i8.photobucket.com/albums/a42/splfrek/subwoofer/DSC04621.jpg
http://i8.photobucket.com/albums/a42/splfrek/subwoofer/DSC04622.jpg